Influence of PEG plasticizer content on the proton-conducting PEO:MC-NH4I blend polymer electrolytes based films

Abdullah, Omed Gh.; Ahmed, Hawzhin T.; Tahir, Dana A.; Jamal, Gelas M.; Mohamad, Azhin H.

doi:10.1016/j.rinp.2021.104073

Cited by 38 publications

(13 citation statements)

References 59 publications

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“…From the linear fitting methods, we obtain the activation energy ( E a ) values of 0.41 eV, respectively. The activation energy is the sum of the generation and migration energies of mobile charge carriers. , In general, a polymer electrolyte with a low activation energy will have a high ionic conductivity which is desirable for practical applications.…”

Section: Resultsmentioning

confidence: 99%

“…Nyquist plots contain the general characteristics at a high-frequency semiarc region followed by low-frequency spikes. The semiarc corresponds to the bulk characteristics of the system, and the low frequency peak corresponds to the charge build up at the electrode–electrolyte interface. − The obtained experimental data of impedance plots were fitted with an equivalent circuit model using Zsimp Win software. The experimental data perfectly fit with the theoretical model.…”

Section: Resultsmentioning

confidence: 99%

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Enhancement of Electrochemical Stability Window and Electrical Properties of CNT-Based PVA–PEG Polymer Blend Composites

et al. 2022

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New polymer blend composite electrolytes (PBCEs) were prepared by the solution casting technique using poly(vinyl alcohol) (PVA)-polyethylene glycol (PEG), sodium nitrate (NaNO3) as a doping salt and multiwalled carbon nanotubes (MWCNTs) as fillers. The X-ray diffraction pattern confirms the structural properties of the polymer blend composite films. FTIR investigations were carried out to understand the chemical properties and their band assignments. The ionic conductivity of the 10 wt % MWCNTs incorporated PVA-PEG polymer blend was measured as 4.32 × 10–6 S cm–1 at 20 °C and increased to 2.253 × 10–4 S/cm at 100 °C. The dependence of its conductivity on temperature suggests Arrhenius behavior. The equivalent circuit models that represent the R s(Q1(R1(Q2(R2(CR3))))) were used to interpret EIS data. The dielectric behavior of the samples was investigated by utilizing their AC conductance spectra, dielectric permittivity, dielectric constant (εi and εr), electric modulus (Mi and Mr), and loss tangent tan δ. The dielectric permittivity of the samples increases due to electrode polarization effects in low frequency region. The loss tangent’s maxima shift with increasing temperature; hence, the peak height rises in the high frequency region. MWCNTs-based polymer blend composite electrolytes show an enhanced electrochemical stability window (4.0 V), better transference number (0.968), and improved ionic conductivity for use in energy storage device applications.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Enhancement of Electrochemical Stability Window and Electrical Properties of CNT-Based PVA–PEG Polymer Blend Composites

et al. 2022

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“…Plasticised polymer electrolytes are developed by combining the polymer host with low molecular weight organic compounds, such as ethylene carbonate [ 214 ], dimethyl carbonate [ 215 ], propylene carbonate [ 216 ], and PEG [ 217 ]. Plasticisers can enhance the ionic conductivity of the polymer electrolyte by reducing the number of active centres and, therefore, weaken the intermolecular and intramolecular forces between polymer chains.…”

Section: Polymer Electrolytes and The Ion Transport Modelmentioning

confidence: 99%

“…The addition of plasticisers allows the reduction of the glass transition temperature of the system thus minimizing the crystallinity of the polymer electrolytes and improving the capability of the salt dissociation with enhanced charge carrier transport. Plasticiser also assists in reducing the semicrystalline phase, which is a nonconducting phase, into the amorphous phase in the matrix [ 217 , 218 ]. Figure 13 shows the plasticiser chemical structures of ethylene, propylene, dimethyl and polyethene.…”

Section: Polymer Electrolytes and The Ion Transport Modelmentioning

confidence: 99%

Recent Advances in Graphene-Based Nanocomposites for Ammonia Detection

2022

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The increasing demand to mitigate the alarming effects of the emission of ammonia (NH3) on human health and the environment has highlighted the growing attention to the design of reliable and effective sensing technologies using novel materials and unique nanocomposites with tunable functionalities. Among the state-of-the-art ammonia detection materials, graphene-based polymeric nanocomposites have gained significant attention. Despite the ever-increasing number of publications on graphene-based polymeric nanocomposites for ammonia detection, various understandings and information regarding the process, mechanisms, and new material components have not been fully explored. Therefore, this review summarises the recent progress of graphene-based polymeric nanocomposites for ammonia detection. A comprehensive discussion is provided on the various gas sensor designs, including chemiresistive, Quartz Crystal Microbalance (QCM), and Field-Effect Transistor (FET), as well as gas sensors utilising the graphene-based polymer nanocomposites, in addition to highlighting the pros and cons of graphene to enhance the performance of gas sensors. Moreover, the various techniques used to fabricate graphene-based nanocomposites and the numerous polymer electrolytes (e.g., conductive polymeric electrolytes), the ion transport models, and the fabrication and detection mechanisms of ammonia are critically addressed. Finally, a brief outlook on the significant progress, future opportunities, and challenges of graphene-based polymer nanocomposites for the application of ammonia detection are presented.

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“…C; t ion = 0.82 Unplasticized SPE: σ = 1.02 × 10 −5 S cm −1 ; T g = 68 • C [111] PVDF-HFP-LiClO 4 -SN Solution casting ~1.62 × 10 −3 (20 • C) E A = 0.40 eV Unplasticized SPE: σ = ~6.38 × 10 −9 S cm −1 (20 • C) E A = 0.69 eV [105] PVDF-HFP-LiBETI-SN Solution casting ~2.58 × 10 −3 (20 • C) LiCoO 2 /SPE/Li 4 Ti 5 O 12 cell (C/10, 25 • C): Initial discharge capacity 116 mAh g −1 , 78% capacity retention after 120th cycle [105] PVDF-PEO-LiClO 4 -SN Solution infiltration in PVDF film + drying 2.80 × 10 −5 (25 • C) T g = −75.6 • C; t Li+ = 0.37 (25 • C) LiFePO 4 /SPE/Li: OCV = 3.1 V, discharge capacity 109 mAh g −1 (100th cycle)10 −4 (30 • C) E A = 0.60 eV; T g = −50 • C; T m = 50 • C [43] PEO-KI-PEG Solution casting 5.27 × 10 −5 (25 • C) Unblended PEO-KI SPE: σ = 1.96 × 10 −5 S cm −1 (25 • C) Low M w of PEG (~4000) might be trapped or crosslink in PEO-KI network [113] PEO-LiTFSI-S 2 TFSI Mixing, vacuum-sealed in pouch and hot press 0.96 × 10 −3 (22 • C) 4.00 × 10 −3 (60 • C) t Li+ = 0.31 (60 • C) LiFePO 4 /SPE/Li: Discharge capacity (1 C, 60 • C) = 160.1 mAh g −1 (500th cycle), 89.10 −5 (25 • C) 2.14 × 10 −4 (50 • C) T g = −58.1 • C; %χ C = 24.7% High thermal stability with decomposition temperature above 220 • C LiFePO 4 /SPE/Li: Discharge capacity (0.2 C, 50 • C) = 151.5 mAh g −1 (120th cycle), 95.4% capacity retention Unplasticized SPE: σ = 7.24 × 10 −7 S cm −1 (25 • C) T g = −44.8 • C; %χ C = 33.10 −3 (30 • C) E A = 0.0322 eV Unplasticized SPE: σ = 7.62 × 10 −5 S cm −1 (30 • C)E A = 0.0465 eV[116,117] …”

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confidence: 99%

Development on Solid Polymer Electrolytes for Electrochemical Devices

2021

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Electrochemical devices, especially energy storage, have been around for many decades. Liquid electrolytes (LEs), which are known for their volatility and flammability, are mostly used in the fabrication of the devices. Dye-sensitized solar cells (DSSCs) and quantum dot sensitized solar cells (QDSSCs) are also using electrochemical reaction to operate. Following the demand for green and safer energy sources to replace fossil energy, this has raised the research interest in solid-state electrochemical devices. Solid polymer electrolytes (SPEs) are among the candidates to replace the LEs. Hence, understanding the mechanism of ions’ transport in SPEs is crucial to achieve similar, if not better, performance to that of LEs. In this paper, the development of SPE from basic construction to electrolyte optimization, which includes polymer blending and adding various types of additives, such as plasticizers and fillers, is discussed.

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Influence of PEG plasticizer content on the proton-conducting PEO:MC-NH4I blend polymer electrolytes based films

Cited by 38 publications

References 59 publications

Enhancement of Electrochemical Stability Window and Electrical Properties of CNT-Based PVA–PEG Polymer Blend Composites

Enhancement of Electrochemical Stability Window and Electrical Properties of CNT-Based PVA–PEG Polymer Blend Composites

Recent Advances in Graphene-Based Nanocomposites for Ammonia Detection

Development on Solid Polymer Electrolytes for Electrochemical Devices

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